Cross-feeding tool slide



June 29, 1937. F. H. MUSSLER 2,085,685

CROSS-FEEDING TOOL SLI'DE Filed Nov. 27, 1935 5 Sheets-Sheet 1- I 7: I/6 l l I I 5 1 5 i I 4Z6,

' INVENTOR. FRA/vkH. MUSSLER 3 Sheets-Sheet 2 i ll w z a M F. H. MUSSLERI CROSS-FEEDING TOOL SLIDE Filed Nov. 27, 1935 122. IF: mu

Junezs, 1937.

Patented June '29, 1937 UNITED (STATES,

PATENT m cs anamomoss-rsenmo 'roor. suns Frank 11. um, Stratford, m, mto Ballard The necticnt C mpan a corporation at on- Application um :7,1m, Serial No. sum

-11 Claims. in. se -21) This invention relates to cross-feeding tool thepatent to E. P. Bullard Jr., No. 1,382,339, i

dated June 21, 1921. However, the invention may also be used in othenrelations and combinations and may be embodied in other types of machinetools or mechanism as necessary or desirable to carry out any of a greatvariety of operations. One of the objects of the present invention is.to provide means for driving a device such as a 2o to'ol slideto impartthereto a constant unidirec: tional movement or a succession ofdifferent movements thereto in each of a plurality of paths. Anotherobject of the invention 8 to provide common means for successivelymoving a saddle 5 and a tool slide carried by the saddle throughdifferent paths and toprovide a dwell for such movement prior to thetermination of the movements of the driving mechanism. I

Another object of the invention is to provide 30 saddle and cross-slidemechanisms particularly a designed for cooperation with and drive from ascre'wfeedshaft. l

A still further object of the invention is to provide -a structureincluding a cross-feeding" 35 mechanism automatically operable at apredetermined point in the feeding action and including a positivestopand a dwell operable at the termination of movement either of the saddleand slide-together or of the slide after the saddle 1470 comes to rest.

These. and other objects and features or m present invention ,willappear from the. following description of a typicalembodiment-thereofjin which reference is made to the 45 figures of thedrawings, wherein: Figure 1 is an elevation of a typical form ofinvention asseen from the frontwith partsof-z the mechanism broken away;a

Figure 2 is a view of the form or the invention 5 shown in Figure 1 asseen from the side with parts thereof shown in sections, taken on thelines 2--! of Figure 1;

- Figure 3 is a vertical sectional view of the constructio'n of l 'lgure1 taken on the line 3-! between collar and cam.

- collar, 24 adjus ame-4 is a pla n view of the construction-0fFigurehand'fl'q Figure 5 is "a orizontal sectional view of-the form of,th invention shown in Figure 1 taken onthe'line thereof." 5

In the co tion illustrated, a screwfeed shaft is emp yed to (provide thedrive and, threadedly engaged therewith, is. acollar. fixed 1 againstrotation so as to move longitudinally of the screw uponrotation thereof.The collar is adapted to be or move a limited amount with respect to atool slide saddle, the latching being releasable upon engagement of thesaddle with a positive stop for limiting the downward movement thereof,The collar and its dependent structure is permanently engaged in a camslide carried by the tool slide which, in turn, is mounted on thesaddle, thus when the collar is released from the saddle and moves withrespect thereto, the slide will be moved because of the engagementAn-important feature of the invention, in addition tothe latching andreleasing means,-'the stop and the general structural features, is theconfiguration of "the cam path such that just 2r before the terminationof the feeding action, the

' slide will come to rest, thus providing a dwell, so that in amechanism where tool feed and work spindle rotation are inter-dependentthe tool may come to rest prior to the stopping of the spindle thusproviding for one or more rotations of the workunder the toot after thetoolhas finished feeding but prior to its retraction.

; Referring to the figures of the drawings, a column or base i! of' themachine E formed with suitable ways ll along which a carriage or saddlei6 is slidable. The outer face of the saddle is provided with similarways I! which may bedisposed at any desired angle' vith respect to thesaddle and which receive and guide a tool slide 40 or other element. 20in the movement thereof with" respect to the saddle I6. Asshown in theearlier patent, the saddle ways 18 may be formed on a separate pieceadjustably bolted to the saddle so as to vary the relation of movementsbetween saddle and tool slide. 7

Movement of thesaddle and slide is effected by vmeans of a feed screw 22preferably extending lengthwise of he machine within the way II andengaged by internally threaded sleeve, or

tably secured to an operating member 28 slida le within a; channel 28 inthe frontface of th saddle. The position of the sleeve with respecttothe operating member may be varied by adjustment of' a screw ill, while"ment of the saddle has been interrupted.

The tool slide 20 carried by the saddle is recessed on its inner face toreceive a cam block 40 formed with a cam surface, or slot, 42 positionedto be engaged by a cam follower in the form of a cooperating roller 44carried by the operating member 26 for movingthe tool slide withreference to the saddle along the ways I 8.

The cam block shown is circular in form and secured to the tool slide inpredetermined position by retaining screws 46, adjustment of which maybe had to vary the relative movement of slide with respect to'operator.

The shape of the cam surface 42 and the position thereof with respect tothe path of movement of the roller 44 on operating member 26 determinesthe character, amount, and speed of movement of the tool slide withrespect to the saddle while the direction of movement of the slide isdetermined by the angular relation of the ways IS on the saddle alongwhich the tool slide is moved. As shown, the surface 42 of the cam blockmay be straight throughout the great-. er 'part thereof with the lowerend 50 curved to provide a dwell" in the movement of the slide at theend of its stroke. However, the camsurface may be given any othersuitable form or shape to vary the character or speed of movement of thetool slide or device with respect to the saddle or a work piece. Itwillalso be evident that the tool slide or device may be caused to moveeither to the right or to the left from the central position shown inFigure 1 by positioning the cam block so that the cam' surface 42thereof is suitably inclined with respect to the path of movement of theroller 44.

With the elements formed and arranged as described, it will be evidentthat the ways II and cam block 40 can be suitably formed or adjusted tovary the direction and character, of movement of the tool slide withrespect to the saddle so as to perform any desired machining or otheroperation and these movements may be v made to conform to requirementsin any particular installation toobtain the best results therein.

In order to release the operating member 26 for movement relative to thesaddle so that the tool slide may be giventhe movement described,

the slidable bolt/34' is caused tomove to the left, as n in Figure 2,upon completion of the downwa movement of the saddle. The bolt iscarried'by the saddle and normally held against movement by asp'ringpressedlatch 52 which, when in projected position, engages a recess inthe bolt 34. The bolt is also provided with a slot 54 on the rear side,as seen in Figure 2, into which the lower end or foot 56 of theoperating member 2i; extends, the slot and foot being provided withcooperating inclined surfaces 53 serving upon movement of the operatingmember with respect to the saddle to force the bolt 34 to the left.

Release of the operating member to actuate the tool slide is effectedupon completion of a predetermined movement of the saddle by means of anadjustable tripping device located below .the saddle and in position topositively arrest movement thereof. The tripping device is adjusttheslide.

with the operating member.

ably held between the vertical ways l4 on the column, or base, of themachine by bolts 62 extending through a block- 64 and secured to aretaining member 66 in a recess 68.

The upper surface of block 64 is accurately lo- 5 cated in adjustedposition to engage a projecting pin carried by the saddle is when thesaddle has completed its downward movement, The pin is urged outward bythe action of spring 12 acting through a. pivoted member 14 carried bythe 10 saddle and positioned with one end thereof in a recess 16 inlatch 52 and with the opposite end engaging the head of pin 10. When thepin is depressed or forced inwardly by engagement with the block 64 ofthe tripping device, the member l5 I4 is rocked about its pivot causingthe latch 52 to be retracted and the bolt 34 released for movement tothe left as seen in Figure 2. The operating member 26 then continues itsmovement downward while the movement of the saddle 20 is arrested. Thefoot 56 of the operating member therefor moves into the cam slot 54 andthe cam surfaces 58 on the foot and-bolt 34 cooperate to move the boltso that it projects into a recess l5 in the upper portion of thetripping device-60 preventing upward movement of the saddle when thedirection of rotation of the feed screw is reversed and before the toolslide has returned to the central or normal position shown in Figure 1.

The operating member 26 when released from the saddle moves downwardcausing the roller 44 to engage the cam surface 42 on the cam block andactuate the tool slide. The slide is thus moved with reference to thesaddle through a new 35 path while the saddle remains in fixed position.The slide continues to move under the action of the operating member ascontrolled by the cam elements until the dwell terminus of the cam pathis reached. Thereafter a small amount of 40.

rotation of the screw, independent of movement of the slide, ispermitted to constitute the dwell referred to. The stop screws 48 in thesaddle also act to positively limit thecross-movement of Upon completionof operating movement of the tool slide and reversal of the feed screwfor the traverse movement of the mechanism in the normal operationthereofythe operating member 26 is raised causing the roller. to engagethe 50 upper surface 11 of the slot 42 so that the slide is moved backto the central position shown in Figure 1. The foot 56 of the-operatingmember also moves up through the cam "slot 54 bringing the inclinedsurface 18 thereof into engagement 55 with a similarly inclined surfaceon the bolt 34 forcing the bolt back'to the right until the recesstherein isin position to be'engaged by the latch 52. At the same timethe bolt is withdrawn from the recess 15 in the tripping devicereleasing the saddle for upward movement As the saddle rises. with saidmember on continued operation of the feed screw the pin 10 is againprojected and the latch 52 moved into engagement with the bolt 34 sothat the saddle and operating member are secured together for movementto a raised position.

From the foregoing description of the construction and operation of themechanism illustrated in thedrawings it will be evident that the sameoperating member and drive meahs are used to. move the saddle and thetool slide indifferent paths and that these movementstake placesuccessively and in predetermined timed relation which is variable toadapt the mechanism for a I wide range of operations and uses."Furthermore, the character and amount of movement of the tool slide orother element actuated by mecha- 25 nism embodying the presentinventionare variand in the relation thereof to the mechanism 15 with which it isused without departing from the spirit andscope of the invention.

Having set forth the nature of my invention,

what I claim is: 7

1. In combination with a machine tool havsaddle.

2. In combination with a machine tool having a base, a saddlemounted'for movement on said base, a tool slide mounted for movementonable by said feed screw for imparting movement to said saddle. atripping device adjustably posi-- tioned in the pathflof movement of thesaddle and engageablethereby for disconnecting said 'm'eans-from saidsaddle upon' completion of a predetermined movement of the saddle andoo- 50 operating cam elements on said means and tool slide for movingsaid tool slide with reference.

said saddle. j

4. In combination with a machine tool having ways for guiding a saddle,a saddle movable along said ways, a tool slide carried by said saddleand movable thereon, an operating member releasably connected to saidsaddle for movlng the same, a feed screw engaging the operating memberto actuate the same, cooperating elements 5 carried bythe. operatingmember and tool slide for moving the tool slide with reference tothesaddle and a trip device for releasing said operating member formovement relative-to the saddle to actuate said slide. 1

described is intended use illustrative of a typical ing a base, a saddlemounted for movement on I 'of'the rotation of said 55 5. In combinationvwith a machine tool hav- 1 ing a base, a saddle mounted for movement onsaid base, a tool slide mounted for movement on said saddle, means formoving said saddle, a cam element actuated by said means and acooperating element movable with said tool slide, actuated by said camelement to move said tool slide with respect to said saddle, saidelements being relatively movable to alter the character of movementimparted to said tool slide.

6. In combination with a machine 'tool having a base, a saddle mountedformovement on said base. a tool slide mounted for movement on saidsaddle, means for moving said saddle, a cam element actuated by saidmeans and a cooperating element adiustably mounted on said tool slideand presenting a surface positioned to be engaged by said cam element tomove said tool slide with respect to said saddle.

7. In combination with a machine tool, a tool slide, operating means formoving said tool slide, a rotatable feedscrew for actuating said meansand cooperating cam elements connected to said tool slide and operatingmeans, said elements being formed to move the tool slide at varyingspeeds under constant rotation of said feed screw.

8. In combination .with a machine tool, a tool slide, operating meansfor moving said tool slide engaging a rotatable feed screw and movablelongitudinally thereof and cooperating cam elements carried by said toolslide and operating means including a roller and a cam surface overwhich the roller is movable presenting portions located at differentangles to the path of movement of the operating member to vary the speedof movement of the tool slide.

9. In a tool moving mechanism for machine tools, a tool holding slide, areciprocal actuating member therefor, and a cam connection between saidactuating member. and said slide including a cam path a portion ofwhichis arranged to permit free movement of said actuating member withrespect to said slide to eii'ect a dwell in the movement of the slidewith respect to the actuating member.

10. In a-tool moving mechanism for machine 7 tools, a tool holdingslide, a reciprocal-actuating member, a cam folloiwen' connectionbetween said actuatingmember and said slide including a cam path adaptedto move the slide at an angle with respect to the movement of theactuator and including a terminal portion in line with the movement ofthe actuator sov that said actuator may move without movement of the.slide at the end of the tool feeding stroke.

11. In a tool moving mechanian for machine tools, atoolcarrying slide,including a cam path,

a reciprocal actuator having a follower within said path, screw meansfor reciprocating said actuator in response to the iotation of a feed

